--- product_id: 232087546 title: "Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring" brand: "dfrobot" price: "AED 292" currency: AED in_stock: true reviews_count: 3 category: "Dfrobot" url: https://www.desertcart.ae/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol store_origin: AE region: United Arab Emirates --- # 0.15% high precision Plug & Play, no soldering ≤15s fast response Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring **Brand:** dfrobot **Price:** AED 292 **Availability:** ✅ In Stock ## Summary > 🌬️ Breathe Easy with Instant, Precise Oxygen Sensing — Plug In, Power Up, and Lead the Air Quality Revolution! ## Quick Answers - **What is this?** Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring by dfrobot - **How much does it cost?** AED 292 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ae](https://www.desertcart.ae/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol) ## Best For - dfrobot enthusiasts ## Why This Product - Trusted dfrobot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play Simplicity:** Forget soldering and complex wiring—just connect via the standard 4-pin Gravity interface and start measuring instantly. - • **Seamless IoT Integration:** Compatible with Arduino, ESP32, and Raspberry Pi at 3.3V-5.5V, making your smart environment projects effortless. - • **Fast Calibration, Zero Hassle:** Get up and running quickly with ready-to-use sample code and natural air calibration—no expensive gases required. - • **Built to Last, Built to Perform:** Enjoy over 2 years of stable operation with ultra-low drift and resistance to cross-gas interference, even in harsh conditions. - • **Precision that Powers Innovation:** Experience ultra-accurate oxygen readings with 0.15% resolution—perfect for mission-critical air quality projects. ## Overview The Gravity I2C Electrochemical Oxygen Sensor Module delivers precise, real-time oxygen concentration readings (0-25% Vol) via a hassle-free digital I2C interface. Designed for seamless plug & play with popular microcontrollers like Arduino, ESP32, and Raspberry Pi, it eliminates soldering and complex coding. With a fast ≤15s response time, 0.15% measurement accuracy, and a robust 2-year lifespan, this compact sensor is ideal for IoT air quality monitoring, smart greenhouses, and safety systems in challenging environments. ## Description Product description This Gravity: I2C Oxygen / O2 Sensor is based on electrochemical principles and it can measure the ambient O2 concentration accurately and conveniently. With high anti-interference ability, high stablility and high sensitivity, this arduino-compatible oxygen / O2 sensor can be widely applied to fields like portable device, air quality monitoring device, and industries, mines, warehouses and other spaces where air is not easy to circulate. This compact dfrobot oxygen / O2 sensor supports I2C output, it can be calibrated in the air, can accurately measure the oxygen concentration in the environmentit. It is compatible with many mainboards like Arduino Uno, esp32, Raspberry Pi and so on. Its effective range is 0~25%Vol, and resolution can reach to 0.15%Vol. It supports wide range input voltage: 3.3V to 5.5V. Moreover, the lifetime is as long as 2 years. With simple Gravity interface and practical sample code, you can build your own oxygen / O2 concentration monitor easily and conveniently. Board Overview SDA: I2C System Data Line SCL: I2C System Clock Line GND: - VCC: + Version upgrade history -V1.0 I2C address can be switched 0X72, 0X73 -V1.1 I2C address can be switched 0X70, 0X71, 0X72, 0X73(upgrade to V1.1 on 2021/12/13) Features Quick calibration function High sensitivity I2C digital Interface Compatible with both 3.3V and 5V micro-controllers Polarity protection Longer sensor life Calibration The oxygen / O2 sensor can be calibrated using the characteristic that the oxygen content in the atmosphere is 20.9%. Calibration Method: Place the oxygen / O2 sensor in the outdoor environment, after the sensor data is stable, long press the calibration button on the sensor for 2 seconds, the sensor will be calibrated. Connection Diagram Precautions Disable soldering during installation; Pins are forbidden to break and bend; Electrolyte leakage will cause damage, please do not disassemble the sensor at will; The sensor avoids contact with organic solvents (including silica gel and other adhesives), paints, chemicals, fuel oils and high-concentration gases; All electrochemical sensors cannot be completely encapsulated with resin materials, nor can they be immersed in an oxygen-free environment, otherwise the performance of the sensor will be damaged; All electrochemical sensors should not be used in environments containing corrosive gases, which can damage the sensor; When testing and applying the sensor, the front vertical intake must be avoided; The intake surface of the sensor must not be blocked or polluted; The waterproof and breathable membrane above the sensor is strictly forbidden to be opened or damaged; The sensor must not be subject to excessive impact or vibration; Do not use the case if it is damaged or deformed; In a high-concentration gas environment, it is slow to return to the initial state after long-term use; When the sensor is stored, the working electrode and the reference electrode should be in an open state; It is forbidden to encapsulate the sensor with hot melt adhesive or sealant with curing temperature higher than 80℃; It is forbidden to store and use in high concentration acid gas for a long time. SPECIFICATION Review: Please read this information prior to installation. - IMPORTANT INFORMATION: This sensor is model number: SEN0322. If you are using an Arduino, make sure that use use the library called, DFRobot_OxygenSensor. Do not use the library called DFRobot_EOxygenSensor, as this is for the sensor model SEN0496 and WILL NOT work with this sensor. As for the sensor itself, it it easy to setup (with the correct library) and appears to work flawlessly. Review: funciona muy bien - Funciono muy bien en el prototipo ## Features - [INSTANT DIGITAL READINGS VIA I2C] Stop wrestling with complex ADC formulas! Unlike traditional analog sensors, this O2 module features a built-in signal conditioning chip that outputs precise oxygen concentration directly via I2C interface. Saves hours of coding and eliminates voltage-drop errors, making the project development effortless. - [PLUG & PLAY, NO SOLDERING REQUIRED] Designed with a standard Gravity 4-pin interface and including the connecting cable, users can say goodbye to messy wiring. Supports a 3.3V~5.5V wide voltage input, ensuring compatibility with Arduino Uno ESP32, and Raspberry Pi without needing level converters. - [HIGH PRECISION & QUICK CALIBRATION] Accurately measures ambient oxygen levels (0-25% Vol range) with a high 0.15% resolution and fast response time (≤15s). Worried about complex setups? We provide ready-to-use sample code that allows for a quick air calibration process in natural environments—no expensive calibration gases needed. - [2-YEAR LIFESPAN & HIGH STABILITY] Powered by an electrochemical probe, it offers exceptional resistance to cross-gas interference and ultra-low drift (<2% per month). Built to operate reliably in harsh environments (-20~50°C), delivering a long service life of over 2 years in normal air conditions. - [VERSATILE IoT APPLICATIONS] The ultimate choice for DIY makers, STEM educators, and engineering prototypes. Ideal for monitoring air quality in confined spaces, underground garages, smart greenhouses, mushroom cultivation, and building safety alarm systems. (Note: Designed for ambient air monitoring; not suitable for medical or 100% pure oxygen applications). ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08BL1NLGV | | Best Sellers Rank | #244,463 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #578 in Temperature Probes & Sensors | | Brand | DFROBOT | | Brand Name | DFROBOT | | Current Rating | 0.1 Milliamps | | Customer Reviews | 4.8 out of 5 stars 10 Reviews | | Item Weight | 37 Grams | | Manufacturer | DFROBOT | | Material | Nylon | | Material Type | Nylon | | Maximum Supply Voltage | 5.5 Volts (DC) | | Measurement Accuracy | 0.15%Vol | | Measuring Range | 0~25%Vol | | Model | SEN0322 | | Mounting Type | Flange Mount | | Output Type | I2C digital data stream | | Part Number | SEN0322 | | Response Time | 15 seconds | | Specific Uses For Product | Oxygen Sensor | | Style | Portable,Compact | | Style Name | Portable,Compact | | Upper Temperature Rating | 50 Degrees Celsius | ## Product Details - **Brand:** DFROBOT - **Current Rating:** 0.1 Milliamps - **Item Weight:** 37 Grams - **Material:** Nylon - **Style:** Portable,Compact ## Images ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 1](https://m.media-amazon.com/images/I/61dvkKby3AL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 2](https://m.media-amazon.com/images/I/61NOOGsOGlL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 3](https://m.media-amazon.com/images/I/61oTvGKNOaL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 4](https://m.media-amazon.com/images/I/61usXSZlzRL.jpg) ![Gravity: I2C Electrochemical Oxygen (O2) Sensor Module | 0-25% Vol Range | Plug & Play Digital Gas Detector | No Soldering | 3.3V-5.5V for Arduino, ESP32, Raspberry Pi | IoT & Air Quality Monitoring - Image 5](https://m.media-amazon.com/images/I/61EvHByqoSL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Please read this information prior to installation. *by M***R on April 30, 2026* IMPORTANT INFORMATION: This sensor is model number: SEN0322. If you are using an Arduino, make sure that use use the library called, DFRobot_OxygenSensor. Do not use the library called DFRobot_EOxygenSensor, as this is for the sensor model SEN0496 and WILL NOT work with this sensor. As for the sensor itself, it it easy to setup (with the correct library) and appears to work flawlessly. ### ⭐⭐⭐⭐⭐ funciona muy bien *by C***N on March 12, 2025* Funciono muy bien en el prototipo ### ⭐⭐⭐⭐ Buen sensor de 02 atmosferico *by R***L on August 5, 2025* Uno duró poco, pero el otro esta estable despues de 2 años! ## Frequently Bought Together - Gravity: I2C Oxygen Sensor Compatible with Esp32 (0-25% Vol) | High Sensitivity High Stablility High Anti-Interference | Suitable for Portable Air Quality Monitoring Device - ELEGOO UNO Project Super Starter Kit with Tutorial and UNO R3 Board Compatible with Arduino IDE - ELEGOO 120pcs Multicolored Dupont Wire 40pin Male to Female, 40pin Male to Male, 40pin Female to Female Breadboard Jumper Ribbon Cables Kit Compatible with Arduino Projects --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ae/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol](https://www.desertcart.ae/products/232087546-gravity-i2c-electrochemical-oxygen-o2-sensor-module-0-25-vol) --- *Product available on Desertcart United Arab Emirates* *Store origin: AE* *Last updated: 2026-05-11*